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But you still have to walk around trees, at least the trunk part. Maybe a tree is a subset of shrubs. Maybe shrubs are graphs.

If a tree doesn’t topple after a millennium, it’s a…

Y2K compliant data structure

force of nature.

I like that definition, but: is a tree with very low branches (like a fir) really a shrub? Does a fallen tree become a shrub?

And are walls, houses, rivers, people, etc. all shrubs?

Christmas trees: actually Christmas shrubs.

Christmas trees aren't just murdered trees, they're murdered baby trees.

But what about plants that can be pruned to both shapes?

Trubs, obviously

Shreebs.

Christmas Shrub then?

Maybe Hanukkah Bush is a totally valid taxonomic classification.